Patents by Inventor Emil Bogl

Emil Bogl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spool member of a multi-way-valve
    Patent number: 4566479
    Abstract: In the spool member of a multi-way-valve leakage of pressure fluid from the inlet port to the operating ports and a corresponding pressure increase in a consumer are prevented by annular grooves and radial bores through which pressure fluid leaking from the inlet is discharged to the reservoir. The radial bores are provided in the spool member so that the land relief between the pressure inlet port and the operating port is achieved via the spool member, and the housing of the multi-way-valve may remain unchanged.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: January 28, 1986
    Assignee: Mannesmann Rexroth GmbH
    Inventors: Hermann J. Rotte, Emil Bogl